Wireless power energy transmission system and control method based on parallel energy system load compensation

Abstract

The present invention discloses a wireless power energy transmission system and a control method based on parallel energy system load compensation, comprising a transmitting side coil and a receiving side coil, wherein the transmitting side further is provided with a transmitting side inverter connected with a wireless induction coil; and a primary side compensation topology is inputted between the transmitting side inverter and the wireless induction coil; the receiving side coil is connected with a rectifier via a secondary side compensation topology. The back end of the rectifier is provided with two DC converters connected in parallel. The rectifier is able to convert the sensed AC into DC and charges for a super-capacitor and a battery through the two DC converters connected in parallel. With the above structure and the method, the wireless transmission mode is used to provide the power supply to the parallel energy storage system; through the use of a transmitting side inverter, the direct-current power supply is converted into the high-frequency alternating current and an input LCC-S compensation topology is inputted; and the rectifier arranged at the receiving side converts the sensed AC into DC and charges for a super-capacitor and a battery through two Buck converters connected in parallel respectively.

Description

technical field [0001] The present invention relates to a wireless power transmission technology, in particular to a wireless power transmission system and control method based on parallel energy system load compensation. Background technique [0002] In the application of high-power wireless power transfer (WPT) system, the load energy system is mainly a single battery or supercapacitor energy storage device, which can be supplemented by wireless power transfer. The main working principle is: through The DC voltage is obtained by rectifying the AC power of the traction network, which is transformed into high-frequency AC power through a single-phase full-bridge inverter, and the AC power is input into the coil on the transmitting side to generate an alternating magnetic field. According to the principle of electromagnetic induction, the coil on the receiving side induces AC power, thereby realizing the non-contact transmission of power. In order to meet the power requireme...

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Problems solved by technology

However, it takes a certain amount of time to complete the tracking of the optimal point, and there is a certain time error, which leads to a certain deviation in the optimal operating po

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